Abstract: A strap device has a first guide having a first slit (7a), a third slit (7b), and an intermediate member (3b) defined therebetween; a single strap (11) connected at one end to the intermediate member (3b); and a second guide (5) that is movably provided opposite the first guide (3), on which a second slit (9a) and a fourth slit (9b) are formed, and that has an intermediate member (5b) defined between the second and fourth slits. The other end (11b) of the strap passes through the second slit (9a), the fourth (9b), third (7b), first (7a), and second (9a) slits in that order. When the other end (11b) of the strap is drawn away from the second guide (5), the strap is pulled out to three times the original length, and when the second guide (5) is drawn away from the first guide, the strap becomes the original length.

Abstract: A strap device has a first guide having a first slit (7a), a third slit (7b), and an intermediate member (3b) defined therebetween; a single strap (11) connected at one end to the intermediate member (3b); and a second guide (5) that is movably provided opposite the first guide (3), on which a second slit (9a) and a fourth slit (9b) are formed, and that has an intermediate member (5b) defined between the second and fourth slits. The other end (11b) of the strap passes through the second slit (9a), the fourth (9b), third (7b), first (7a), and second (9a) slits in that order. When the other end (11b) of the strap is drawn away from the second guide (5), the strap is pulled out to three times the original length, and when the second guide (5) is drawn away from the first guide, the strap becomes the original length.

Abstract: A strap device has guides 3, 5 in which slits 7b, 7a, 9a, 9b are formed with central members 3b, 5b intervening therebetween. First ends of straps 11, 13 are secured to the central members 3b, 5b respectively. A second end 11b of the strap 11 passes through the slits 9a, 9b, and then passes through the slit 7a of the guide 3. A second end 13b of the strap 13 passes through the slits 7a, 7b of the guide 3, and then passes through the slit 9a. When the second ends 11b, 13b are pulled out in mutually opposite directions, the strap, which has a quadruple length as compared with the spacing distance between the guides, can be instantaneously pulled out. When the strap device 15 is used for a shoulder strap for a bag which has a good appearance.

Abstract: A strap device has guides 3, 5 in which slits 7b, 7a, 9a, 9b are formed with central members 3b, 5b intervening therebetween. First ends of straps 11, 13 are secured to the central members 3b, 5b respectively. A second end 11b of the strap 11 passes through the slits 9a, 9b, and then passes through the slit 7a of the guide 3. A second end 13b of the strap 13 passes through the slits 7a, 7b of the guide 3, and then passes through the slit 9a. When the second ends 11b, 13b are pulled out in mutually opposite directions, the strap, which has a quadruple length as compared with the spacing distance between the guides, can be instantaneously pulled out. When the strap device 15 is used for a shoulder strap for a bag which has a good appearance.